If 48=12(mod n)m what is the values of n?

The correct answer is option (3) : $n= 2, 3, 4, 6, 9, 12, 18, 36$

$48≡12 (mod\, n)$

$48-12 $ is divisible by n.

$36$ is divisible by n.

or n is a divisor of 36

$n= 2, 3, 4, 6, 9, 12, 18, 36$